Jeff,
FYI: a spam with a link to http://www.cabdriver.kjcjvjv.com.com/ just showed up. Obviously dumbo spammy goofed up...
as we obviosuly won't want to SURBLize com.com (cnet) and this may be reported by some spamtrapping system it may be a good idea to check if com.com is whitelisted.
thanks
Alex